|Publication number||US7873772 B2|
|Application number||US 12/372,395|
|Publication date||Jan 18, 2011|
|Filing date||Feb 17, 2009|
|Priority date||Feb 17, 2009|
|Also published as||CA2692119A1, CA2692119C, CN101833290A, CN101833290B, EP2218397A2, EP2218397A3, US8051236, US8055830, US20100211713, US20110022762, US20110022763|
|Publication number||12372395, 372395, US 7873772 B2, US 7873772B2, US-B2-7873772, US7873772 B2, US7873772B2|
|Inventors||Gary J. Waldhoff, Michael C. Dorsey|
|Original Assignee||Tyco Healthcare Group Lp|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (34), Referenced by (19), Classifications (12), Legal Events (3)|
|External Links: USPTO, USPTO Assignment, Espacenet|
The present invention generally relates to a portable and programmable medical device system.
Portable, programmable medical devices are becoming more common and beneficial for treating patients. Some of these medical devices may be so small and lightweight that the patient is not confined to bed. In that case, the portable, programmable medical device gives the patient freedom to do some, if not all, of his/her normal day-to-day activities as he/she receives treatment. Other of these medical devices are readily moved about (i.e., portable), but still restrict the patient's freedom of movement. The device may include a controller that is programmed for controlling an operation of the device. With some portable and programmable medical devices, it is desirable to restrict the patient or other non-authorized person from deselecting the selected program or selecting another program during use.
In one aspect, a medical device system generally comprises a removably portable medical device including a controller programmed to selectively execute at least two programs for controlling at least one operation of the medical device. A docking unit on which the medical device can be removably mounted comprises an operator interface for selecting a program from the at least two programs. The docking unit is configured to communicate with the controller of the medical device when the medical device is mounted on the docking unit to instruct the controller to execute the selected program. The controller of the medical device is configured to control the medical device according to the selected program when the medical device is removed from the docking unit. The medical device has no operator interface that allows the selected program to be deselected or changed.
In another aspect, a portable medical device generally comprises a controller programmed to selectively execute a plurality of programs for controlling operation of the medical device. A plurality of proximity sensors in communication with the controller. Each proximity sensor is adapted to send a first signal to the controller when the sensor detects a target and a second signal to the controller when the sensor does not detect the target. The controller is configured to execute one of the programs based on the combination of the signals sent by the proximity sensors.
In yet another aspect, a docking unit on which a portable medical device can be removably mounted, where the medical device includes a controller programmed to selectively execute at least two programs for controlling operation of the medical device, generally comprises an operator interface for selecting a program from said at least two programs. The docking unit is configured to communicate with the controller of the medical device when the medical device is mounted on the docking unit to instruct the controller to execute the selected program.
Other objects and features will be in part apparent and in part pointed out hereinafter.
Corresponding reference characters indicate corresponding parts throughout the drawings.
Referring to the drawings,
Referring first to
The controller 16 and a vacuum pump 18 are contained within a housing 20 of the negative pressure unit 12. A canister 22 is removably secured to the housing 20 and is fluidly connected to the vacuum pump 18. Fluid tubing 26 is fluidly connected at one of its ends to the canister 22 via a canister inlet port 28. The fluid tubing 26 is fluidly connected at its opposite end to a dressing inlet port 30 secured to a flexible seal 32 of a wound dressing construction, generally indicated at 34. The wound dressing assembly also includes a gauze or foam layer 36 and a non-adherent wound contact layer 38, although it may include other components without departing from the scope of the present invention. As is generally known in the art, the wound dressing construction 34 is applied to a wound on a patient so that dressing inlet port 30 is in sealed fluid communication with the wound bed. The vacuum pump 18 is in fluid communication with the wound bed via the canister 22 and the fluid tubing 26. As a result, the vacuum pump 18 is able to create a negative pressure at the wound bed, and fluids and other exudates at the wound bed are drawn into the fluid tubing 26 and captured in the canister 22. The negative pressure unit 12 may include a hydrophobic filter (not shown) in the canister 22 or the housing 20 to prevent exudates from entering the vacuum pump 18. Other mechanisms for preventing exudates from entering the vacuum pump do not depart from the scope of the present invention. The negative pressure unit 12 may include other components and features without departing from the scope of the present invention.
As discussed above, the docking unit 14 communicates with the negative pressure unit controller 16 to instruct the controller to execute a pump-operating program, which may be one of a plurality of different programs. In one example, one pump-operating program may include instructions to apply continuous suction at the wound site at a selected pressure; another, different pump-operating program may include instruction to apply intermittent suction at the wound site at selected time intervals. Other pump-operating programs include instructions to apply continuous suction at the wound site with varying selected pressure level intervals and instructions to apply intermittent suction at the wound site with varying selected pressure levels and time intervals. Other pump-operating programs do not depart from the scope of the present invention.
In a first illustrated embodiment, the docking unit 14 includes a recess 40 for receiving the negative pressure unit 12 and mounting it on the docking unit. Other ways of mounting the negative pressure unit 12 on the docking unit 14 do not depart from the scope of the present invention. First, second and third permanent magnets 42 a, 42 b, 42 c, respectively, inside the docking unit are located proximate to the recess 40. The permanent magnets 42 a, 42 b, 42 c are mounted on an actuator mechanism 44. In the illustrated embodiment, the actuator mechanism 44 includes generally aligned first, second and third disks 46 a, 46 b, 46 c that are independently rotatable about a common axis A1. Each magnet 42 a, 42 b, 42 c is mounted on a corresponding one of the disks 46 a, 46 b, 46 c, generally adjacent to a periphery of the disk. The disks are independently rotatable in the docking unit 14, so that each magnet 42 a, 42 b, 42 c is independently moveable between a detection position and a non-detection position, as explained in more detail below. In the illustrated embodiment, a controller 47 in the docking unit 14 controls the actuator mechanism 44 and the movement of the disks 46 a, 46 b, 46 c. A user interface 48 on the docking unit 14 allows a user to input instructions to the controller 47 to control movement of the magnets 42 a, 42 b, 42 c. As explained below, the user interface 48 may include a plurality of buttons (not shown), each of which pertains to one of the pump-operating programs of the negative pressure unit 12. Other ways of moving the disks 46 a, 46 b, 46 c do not depart from the scope of the present invention. Moreover, actuator mechanisms other than rotating disks can be used. For example, slide bars may be used in lieu of rotating disks. Other actuator mechanisms do not depart from the scope of the present invention.
Each magnet 42 a, 42 b, 42 c is capable of activating a corresponding one of first, second and third proximity sensors 50 a, 50 b, 50 c located in the negative pressure unit 12. By way of example but not limitation, these sensors may be Hall-effect sensors. When the negative pressure unit 12 is mounted on the docking unit 14, each magnet 42 a, 42 b, 42 is positioned in either the above-stated detection position (e.g., magnets 42 a, 42 c in
The sensors 50 a, 50 b, 50 c send a combination of signals to the controller 16. The characteristic of the combination of signals is dependent on the position of each of the magnets 42 a, 42 b, 42 c with respect to the corresponding sensor 50 a, 50 b, 50 c. Because there are three Hall-effect sensors 50 a, 50 b, 50 c, each of which can send two different signals, there are a total of eight different combinations of signals that can be sent to the controller. Each combination of signals is interpreted by the controller 16 as a set of instructions. More specifically, the controller 16 is programmed to interpret each combined signal as instructions for executing one of the programmed pump-operating programs. For example, a first combination of signals may be interpreted by the controller 16 as instructing the controller to execute a first pump-operating program, while a second combination of signals may be interpreted by the controller as instructing the controller to execute a second pump-operating program.
As can be understood, the operator interface 48 on the docking unit 14 allows an operator, such as medical personnel, to select a desired pump-operating program for the negative pressure unit 12. With the negative pressure unit 12 mounted on the docking unit 14, the operator selects the desired pump-operating program using the operator interface 48. The selection of pump-operating program instructs the controller 47 in the docking unit 14 to activate the actuator mechanism 44 to move each of the magnets 42 a, 42 b, 42 c into one of the detection position and the non-detection position. With the magnets 42 a, 42 b, 42 c moved into their respective selected positions, each Hall-effect sensors 50 a, 50 b, 50 c either sense or do not sense the corresponding magnet, and send either the detection signal or the non-detection signal to the controller 16 in the negative pressure unit 12. The combination of signals of the three Hall-effect sensors 50 a, 50 b, 50 c is received by the controller 16 as instructions for executing one of the programmed pump-operating programs.
With the desired pump-operating program selected, the negative pressure unit 12 can be removed from the docking unit 14. In the illustrated embodiment, the negative pressure unit 12 does not include an operator interface that allows an operator and/or patient change the selected pump-operating programs, although the negative pressure unit 12 can include a screen to allow the controller 16 to communicate data or status of therapy to the operator and/or patient. Accordingly, once the desired pump-operating program has been selected, it cannot deselected or changed without remounting the negative pressure unit 12 on the docking unit 14 and selecting a new pump-operating program using the docking station. It is understood that the negative pressure unit 12 may include an operator interface (not shown) that allows the operator and/or the patient to activate and deactivate the negative pressure unit (i.e., turn the pump on and off) after it is removed from the docking unit 14. In such an embodiment, the controller 16 would execute the selected pump-operating program when the negative pressure unit 12 is activated.
Referring still to
In a broad sense, the docking unit 14 includes one or more signal generators for generating one or more signals that are sensed by corresponding sensors in the negative pressure unit 12. In the first illustrated embodiment, the signal generators include the magnets42 a, 42 b, 42 c that generate magnetic fields The docking unit 14 (e.g., through the actuator mechanism 44) is configured to control the individual positions of the magnets with respect to the sensor(s) 50 a, 50 b, 50 c, when the negative pressure unit 12 is mounted on the docking unit. In the illustrated embodiment, magnetic flux densities of the magnets 42 a, 42 b, 42 c sensed at the corresponding sensors 50 a, 50 b, 50 c are controlled by moving the respective magnets closer to or farther from the corresponding sensors by independently rotating the disks 46 a, 46 b, 46 c. In the second illustrated embodiment, the signal generators include the electromagnetic sources 142 a, 142 b, 142 c, such as electromagnets that generate the magnetic fields as a function of the applied current signals, and the sensor include Hall-effect sensors. In another example, the electromagnetic sources 142 a, 142 b, 142 c comprise light sources and the sensors include light sensors.
Having described the invention in detail, it will be apparent that modifications and variations are possible without departing from the scope of the invention defined in the appended claims.
When introducing elements of the present invention or the preferred embodiment(s) thereof, the articles “a”, “an”, “the” and “said” are intended to mean that there are one or more of the elements. The terms “comprising”, “including” and “having” are intended to be inclusive and mean that there may be additional elements other than the listed elements.
As various changes could be made in the above constructions, products, and methods without departing from the scope of the invention, it is intended that all matter contained in the above description and shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.
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|U.S. Classification||710/303, 439/38|
|Cooperative Classification||G06F19/3406, A61B2560/0456, G06F19/3418, A61B5/0002, A61B5/445|
|European Classification||A61B5/00B, G06F19/34C, G06F19/34A, A61B5/44B6|
|Feb 17, 2009||AS||Assignment|
Effective date: 20090216
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WALDHOFF, GARY J.;DORSEY, MICHAEL C.;REEL/FRAME:022268/0349
Owner name: TYCO HEALTHCARE GROUP LP, MASSACHUSETTS
|Jan 9, 2013||AS||Assignment|
Free format text: CHANGE OF NAME;ASSIGNOR:TYCO HEALTHCARE GROUP LP;REEL/FRAME:029595/0101
Owner name: COVIDIEN LP, MASSACHUSETTS
Effective date: 20120928
|Jul 18, 2014||FPAY||Fee payment|
Year of fee payment: 4